The Optimal DoF for the Noncoherent MIMO Channel with Generic Block Fading
Paper i proceeding, 2021

The high-SNR capacity of the noncoherent MIMO channel has been derived for the case of independent and identically distributed (IID) Rayleigh block fading by exploiting the Gaussianity of the channel matrix. This implies the optimal degrees of freedom (DoF), i.e., the capacity pre-log factor. Nevertheless, as far as the optimal DoF is concerned, IID Rayleigh fading is apparently a sufficient but not necessary condition. In this paper, we show that the optimal DoF for the IID Rayleigh block fading channel is also the optimal DoF for a more general class of generic block fading channels, in which the random channel matrix has finite power and finite differential entropy. Our main contribution is a novel converse proof based on the duality approach.

MIMO

block fading

noncoherent communications

degrees of freedom

Författare

Khac-Hoang Ngo

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

Sheng Yang

Université Paris-Saclay

Maxime Guillaud

Huawei

2020 IEEE Information Theory Workshop, ITW 2020

1-5
978-1-7281-5963-8 (ISBN)

IEEE Information Theory Workshop (ITW)
Riva del Garda, Italy,

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Telekommunikation

Kommunikationssystem

DOI

10.1109/ITW46852.2021.9457600

ISBN

9781728159621

Mer information

Senast uppdaterat

2023-04-21